I haven't seen any adapters in person, but I do know two people locally who have converted steel frames to disc by just buying the mount and having it welded to the stay. You should also weld a brace into the stays to make an extra triangle back there and reinforce the tubing that way. One used a piece of brake rotor and the other used tubing...both are holding up just fine. Depends on the frame, but some steel frames use thinner tubing that isn't up to the stresses that discs will put on it....welding that reinforcement helps. If you have an aluminum frame, I'd just shop for a new frame instead.

Front brake only is fine

Experienced riders know that the rear brake has a minimal benefit in terms o stopping power. All it does is lock up the rear wheel, which can be done effectively by a V brake.
The difference in braking power and feel is something that you will adapt to quickly if you have skills and never if you don't.
Good Luck.
My goal is to get a new fork for my cross bike with disc mounts and a
mechanical brake.

How about some pertinent information...what kind of frame (make, model, year) is it? I ask because Trek/Gary Fisher/Klein frames from the early to mid 00's used an adapter to run disc brakes on many of their frames.

I am not sure what year it's from its an older VooDoo full suspension frame. I know that disc brakes aren't necessarily better than v-brakes, but I already have the items necessary to convert it over. If needed I can have pictures up in a few days.

You may want to check this thread out: Rear disk brake adapter. There is some pretty good info for running rear disc brakes on a frame that doesn't have mounts. Also I've used the A2Z Adapter mentioned above and it worked but it has some limitations (see my posts in the above mentioned thread).

Erick, Eric, Eric

Originally Posted by ericknguyen95128

I am not sure what year it's from its an older VooDoo full suspension frame. I know that disc brakes aren't necessarily better than v-brakes, but I already have the items necessary to convert it over. If needed I can have pictures up in a few days.

Disc Brakes are necessarily better than v-brakes. V-brakes are a Hugo and Disc brakes are the Ferrari. There is no debate. It is not even close. The weight may even be less on some disc brakes. This is the reason that you are changing your brakes.
Cheers!